Boltwork for circular doors.



PATENTED FEB. e, 1906.

J. B. ()ASSERLY. BOLTWORK FOR CIRCULAR DOORS.

APPLICATION FILED APILII, 1905 ATES AT 35 JOSEPH E. CASSERLY, OF NEWYORK, N. Y., ASSIGNOR TO REMINGTON AND SHERMAN COMPANY, OF PHILADELPHIA,PENNSYLVANIA.

BOL'TWOHIK FOR CIRCULAR DOORS- Specification of Letters Patent.

Patented Feb. 6, 1906.

Application filed April 11, 1905. Serial No. 254,982.

To It whom it 171 04] concern:

Be it known that I, JosErI-I E. OAssERLY, a resident of New York, in thecounty of New York and State of New York, have invented certain new anduseful Improvements in Boltwork for Circular Doors; and I do herebydeclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in boltwork for circular doors, theobject of the invention being to provide improved mechanism forsimultaneously withdrawing or projecting all the radially-disposed boltson the doors and with this obj cot in view the invention consists incertain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described, and pointedout in the claims.

In the accompanying drawings, Figure 1 is a view in elevationillustrating my improvements, and Fig. 2 is a view in section thereof.

1 represents a door having fixed parallel rings 2 secured on its innerside, and alined openings are provided in these rings 2 to receive theradially-disposed bolts 3.

Mounted to turn around inner ring 2, beneath the bolts 3, is a movablering 4, a portion of which has gear-teeth forming a rack in mesh with apinion 5 to move the same, and this pinion 5 may be turned by anydesired mechanism.

Beside each and every bolt 2 is a bell-crank lever 6, fulcrumed to thedoor and having the end of one of its members slotted to receive a pinor screw 7 on the bolt 3 and the end of its other member made with aslot to receive a pin 8 on the ring 4.. Slots are provided in thebell-crank levers to compensate for varying positions of the pins 7 and8 and prevent binding of the parts.

The operation is as follows: Pinion 5 moves ring 4 in one direction,which movement of ring 4 simultaneously moves all the levers 6 to moveall the bolts inward or outward as the case may be.

Slight changes might be made in the general form and arrangement of theparts described without departing from my invention, and hence I wouldhave it understood that I do not restrict myself to the precise detailsset forth, but consider myself at liberty to make such slight changesand alterations as fairly fall within the spirit and scope of myinvention.

Having fully described my invention,what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a door, fixed rings thereon, andradially-disposed bolts mounted in said fixed rings, of bell-cranklevers fulcrumed to, the door and one located adjacent to each bolt andconnected at one end thereto, and a ring movable about one of the fixedrings and connected with all of the levers.

2. The combination with a door and radially-disposed bolts thereon, of abell-crank lever pivoted to the door beside each bolt, pins on the boltsprojecting into slots in one end of the levers, a movable ring, pinsthereon projecting into slots in the other ends of the levers,gear-teeth on said movable ring forming a rack, and an operating-pinionengaging said rack.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOSEPH E. OASSERLY.

Witnesses FRANK O. IIERRING, RUTHERFORD S. FowLER.

